Why is Angkor Wat often thought of as representing the peak of Khmer artistic achievement?

Sole i will mark brainlist to who answer

Marine exptoration of oil uses seismic waves to locate oil in the seabed. what is a negative impact from seismic waves on the aquatic ecosystem of the ocean? a.seismic waves kill microoganisms b.seismic waves disrupts the sand and causes seafloor erosion c.seismic waves have virtually no adverse affects on marine life d.seismic waves damage the sonar that dolphins and whales use to orient themselves underwater

Who was the first explorer to sail all the way down the mississippi river